A high-Tc 4-bit periodic threshold analog-to-digital converter

Gerrit J. Gerritsma, Martin A.J. Verhoeven, Remco J. Wiegerink, Horst Rogalla

Research output: Contribution to journalConference articleAcademicpeer-review

7 Citations (Scopus)
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Using ramp-type Josephson junctions a 4-bit periodic threshold ADC has been designed, fabricated and tested. Practical design constraints will be discussed in terms of noise immunity, flux flow, available technology, switching speed etc. In a period of four years we fabricated about 100 chips in order to bring the technology to an acceptable level and to test various designs and circuit layouts. This resulted in a basic comparator that is rather insensitive to the stray field generated by the analog input signal or variations in mask alignment during fabrication. The input signal is fed into the comparators using a resistive divider network. Full functionality at low frequencies has been demonstrated
Original languageEnglish
Pages (from-to)2987-2990
Number of pages4
JournalIEEE transactions on applied superconductivity
Issue number2
Publication statusPublished - 1997
Event1996 Applied Superconductivity Conference, ASC 1996 - David L. Lawrence Convention Center, Pittsburgh, United States
Duration: 25 Aug 199630 Aug 1996


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